hag-g-erty



(No Model.) 2 Sheets-Sheet 1.

J. W. HAGGERTY. [1

AUTOMATIC GAS PRESSURE REGULATOR. v No. 367,618. Patented-Aug. Z, 1887.

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(No Model.) 2 Sheets-Sheet 2.

J. W. HAGGERTY. AUTOMATIC GAS PRESSURE REGULATOR. No. 367,618. Patented Aug. 2, 1887.

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UNITED STATES PATENT OFFICE.

JAMES IV. HAGGERTY, OF'SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO CHARLES C. MORRIS, OF SAME PLACE.

AUTOMATIC GAE-PRESSURE REGULATOR.

SPECIFICATION forming part of Letters Patent No. 367,618, dated August 2, 1887.

Application filed April 2, 1887. Serial No. 233,402. (No model.)

T all w o it m y wiwelnr a disk, J, and a similar disk, K, at the end of Be it known that I, JAMES IV. HAGGERTY, thescrew-shank L,prcsses upon this disk when of the city and county of San Francisco, State screwed down, thus forcing the elastic valve of California, have invented an Improvement down closely upon the passage or opening to in Automatic GasPressure Regulators; and close it. 55

I hereby declare the following to be a full, Vhen it is desired to allow the gas to pass clear, and exact description of the same. from the holder 0 through the pipe B into the My invention relates to an automatic gaschamber A,th'c screw stem anddisk are turned, pressure regulator which is especially applicaso as to withdrawthem, by means of a suitable 1o ble to liquids, such as beer, in which it is dehand-wheel, and the pressure of the gas will 60 sirable to retain a certain amount of carbonic raise the valve sufiiciently to allow it to pass acid gas and to maintain a regular pressure from the opening or passage F to the opening within the cask or receptacle whilethe liquid or passage H, and thence through the pipe B itself is gradually diminished by being drawn into the chamber A. \Vithin the chamber A off. the end of the pipe B is shown turned at right 65 My invention consists of a chamber into angles and having a minute opening, M, which the gas is delivered under a high pressthrough the center ofthe closed end, this openurc through a peculiar valve, and a mechanism ing M not being more than one sixty-fonrth of within the chamber by which this pressure is an inch in diameter. By the side of this open- 2 reduced bcforeit enters the cask or receptacle, ing M is another opening, N, which passes 70 and by which the flow is arrested when the down through the solid part and opens out pressu rein the cask reaches a certain point and into the body of the chamber A. A rubber commences again if it falls below that point. or other elastic cap or valve, 0, fits over the Referring to the accompanying drawings for end of this chamber, and when pressed down a more complete explanation of my invention, closely covers the inleto pening and closes it 75 Figure 1 is a longitudinal vertical section of in the same manner as has been described for my device. Fig. 2is a detail view of the valve. the valve I.

Fig. 3 is amodification of my device, showing \Vithin the chamberAisaconnecting-piece, the chamber in direct connection witha vessel. P, which is here shown slotted, so as to fit A is a chamber, which may be made of any astride the end of the-pipe 13, which projects 80 suitable or desirable shape. In the present case into the chamber and has the openings M and it is shown as conical in form. To one side of N, and upon one end of this piece is a cap, Q, this chamber a pipc,B, has one end connected, which fits against the outer end of the elastic and the other is connected,with asupply chamcap or valve 0.

ber or holder, 0, which is filled with the gas To the opposite end of the piston Pis fitted at a high pressure. from the generator. Bean elastic diaphragm, R. In the present case tween the holder 0 and the pipe B is a valve- I have shown this diaphragm as being made chamber, E, into the bottom of which a hole or of such a diameter as to give about four inches passage, F, leads from the holder. This small of area, the chamberbeingenlarged, as shown,

40 opening is in the present case shown passing at this point so as to receive the diaphragm. 0 up through the center of the floor or bottom of A screw, S, is fittcd'into the center of the dia the valve-chamber, and at one side and through phragm, being preferably cast into it when the the same floor or bottom is another passage, diaphragm is formed, and this screw serves to H, which opens into the pipe 13. A rubber secure its center to the end of the piston P.

valve or gasket, I, is fitted into the chamber Upon the outer periphery of this diaphragm 5 and lies upon the floor or'bottom of the valve a washer, S, fits, and the screw-cap T, being chamber, so as to cover both the openings or screwed into this end of the chamber A, presses passages just described, and a metal ring or upon the washer, and thus holds the periphwasher fits around the outer edge of the elastic cry of the diaphragm firmly to its seat and valve. Upon the center of this valveis placed makes it gas-tight. A small hole through T [00 allows the air outside the diaphragm to move freely as the diaphragm is forced out or in. A passage, U, leads from that portion of the chamber A containing the valve or cap 0 into the cask 0r receptacle in which the pressure is to be maintained.

It will be manifest that the pressure of five hundred pounds or its equivalent high pressure through the small opening of one sixty fourth of an inch in the inlet-pipe will be counterbalanced by a pressure of live pounds, more or less, upon the diaphragm R, which has a greater area, as before described. Then the pressure within the cask exceeds the desired amount of five pounds, it will act upon the diaphragm, forcing it outwardly and drawing with it the movable connection 1, which causes the cap Q upon its end to press upon the elastic cap or valve 0, and this closes the small inlet-passage M and prevents any gas entering from the holder (D. As soon, however, as the pressure within the cask falls below five pounds or other determined pressure, the force of the gaspassing through the small opening M will act, through the rubber cap or valve 0, to force the bar Pin the opposite direction, and th s permits the cap to rise from its seat sufiieiently to allow the gas to flow from the inlet-opening M through the passage N into the chamber A, and thence through the passage U into the cask until an equilibrium of pressure is again reached. In this manner the eounterbalancing action of the high pressure through the inlet-opening M, and the smaller pressure within the cask acting upon the elastic diaphragm, will cause the connecting device or bar to move back and forward, and thus open and close the inlet-valve with each variation in pressure. In this way it is possible to maintain a certain pressure within the cask or receptacle until all. the liquid has been exhausted therefrom.

It will be manifest that the automatic valves may be arranged in various equivalent ways to that here shown and described, and that the arrangement of the interior of the chamber A and the connections may be varied mechanically without essentially altering the character and operation of the device.

Having thus described myinvention,what I claim as new, and desire to secure by Letters Patent, is-

1. An automatic gas-pressure regulator consisting of a chamber, a nozzle therein provided with an inlet-opening for the gas and an outlet-opening for the escape of the gas, in connection with the interior of the chamber, an elastic cap covering the inlet-opening and connecting the same with the outlet-opening, a diaphragm in the upper part of the chamber, a piston, 1?, connected with said diaphragm and adapted to move therewith, and a cap, Q, connected to the said piston, arranged beneath the elastic cap and adapted to close the inlet-opening by pressing the cap against the same in the upward movement of the diaphragm when there is an excess of pressure in the keg or other receptacle, substantially as described.

2, In a gas-pressure regulator, a gas supply and regulating chamber connected with the receptacle in which the pressure is to be maintained, a pipe-connection between said chamher and the gas-supply, terminating in a nozzle in said chamber, provided with an inletbpening and an outletopening to the interior of the chamber, a rubber cap covering said openings, a diaphragm arranged in the upper part of the chamber, an opening in the chamber above the diaphragm adapted to allow free movement thereof under pressure from below, a piston, P, connected with said diaphragm, and a cap, Q, connected with the said piston and adapted to be operated by the act-ion of the diaphragm under pressure to close the inlet opening by pressure applied to the elastic cap, substantially as described.

In witness whereof I have hereunto set my hand.

JAMES \V. HAGG'ERTY.

.Vitncsses:

S. H. NOURsE, H. 0. LEE. 

